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公开(公告)号：US3241651A
公开(公告)日：1966-03-22
申请号：US34932864
申请日：1964-03-04
Applicant: EMHART CORP
Inventor： COLBY HAROLD S
IPC: B65G47/71
CPC classification number: B65G47/71 , Y10S198/958
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